DE102018120720B4 - Apparatus and method for neutralizing an ammonium sulfate solution - Google Patents
Apparatus and method for neutralizing an ammonium sulfate solution Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/50—Inorganic acids
- B01D2251/506—Sulfuric acid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/406—Ammonia
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/58—Ammonia
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
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Abstract
Vorrichtung zur Neutralisierung einer Ammoniumsulfatlösung mit mindestens einem Verdampfer (V1)
mindestens einem Brüdenwäscher (B1), mit einem Brüdeneinlass (E1), einem ASL-Auslass (A1) für die gewaschene Ammoniumsulfatlösung, sowie einem Dampfauslass (W1) für den gewaschenen Brüden,
dadurch gekennzeichnet, dass
ein neutralisierender Brüdenwäscher (B0) vorgesehen ist, mit einem ASL-Einlass (EASL), einem Dampfauslass (W0), einem Brüdeneinlass (E0) und einem ASL-Auslass (A0), wobei der ASL-Auslass (A1) des mindestens einen Brüdenenwäschers (B1) mit dem Einlass (EASL) des neutralisierenden Brüdenwäschers (B0) und dessen Brüdeneinlass (E0) für den ammoniakhaltigen Brüden mit dem Brüdenauslass (D1) des mindestens einen Verdampfers (V1) verbunden ist, und wobei der Dampfauslass (WO) des neutralisierenden Brüdenwäschers (B0) mit dem Dampfeinlass (E1) des mindestens einen Brüdenwäschers (B1) verbunden ist.
Device for neutralizing an ammonium sulphate solution with at least one evaporator (V1)
at least one vapor scrubber (B1), with a vapor inlet (E1), an ASL outlet (A1) for the washed ammonium sulfate solution, and a steam outlet (W1) for the washed vapor,
characterized in that
a neutralizing vapor scrubber (B0) is provided, with an ASL inlet (EASL), a steam outlet (W0), a vapor inlet (E0) and an ASL outlet (A0), the ASL outlet (A1) of the at least one vapor scrubber (B1) with the inlet (EASL) of the neutralizing vapor scrubber (B0) and its vapor inlet (E0) for the vapor containing ammonia is connected to the vapor outlet (D1) of the at least one evaporator (V1), and the vapor outlet (WO) of the neutralizing Vapor scrubber (B0) is connected to the steam inlet (E1) of at least one vapor scrubber (B1).
Description
Die Erfindung bezieht sich auf eine Vorrichtung und ein Verfahren zur Neutralisierung einer Ammoniumsulfatlösung (ASL), die bei der Verdampfung von organischen Substraten und dem anschließenden Waschen des Brüden in sogenannten Brüdenwäschern entsteht.The invention relates to a device and a method for neutralizing an ammonium sulphate solution (ASL) which is produced during the evaporation of organic substrates and the subsequent washing of the vapor in so-called vapor scrubbers.
Organische Substrate werden auch als Biomasse bezeichnet - wie beispielsweise Klärschlamm oder Biomasse aus nachwachsenden Rohstoffen (NaWaRo). Die organischen Substrate können aus einem Lager für die Biomasse, einer sogenannten Vorgrube, einem Vorgärer, einem Fermenter, z. Bsp. aus einem Biogas - Fermenter stammen; oder es kann sich z. Bsp. um Gülle aus einem landwirtschaftlichen Betrieb oder pumpfähige Biomasse handeln. Prinzipiell kann jedes organische Substrat in Fermentern oder anderen Aufschlussmodulen aufgeschlossen werden. Der hohe Anteil an Stickstoff in diesen Substraten wird in den sogenannten Verdampfern, wie sie beispielsweise in Biogasanlagen zum Einsatz kommen, zu giftigem Ammoniak (NH3 H2O) umgewandelt.Organic substrates are also referred to as biomass - such as sewage sludge or biomass from renewable raw materials (NaWaRo). The organic substrates can come from a storage facility for the biomass, a so-called preliminary pit, a preliminary fermenter, a fermenter, e.g. E.g. from a biogas fermenter; or it can be e.g. For example, liquid manure from a farm or pumpable biomass. In principle, any organic substrate can be digested in fermenters or other digestion modules. The high proportion of nitrogen in these substrates is converted into toxic ammonia (NH 3 H 2 O) in the so-called evaporators, such as those used in biogas plants.
Aus der europäischen Patentanmeldung
Dieser Brüden aus Wasserdampf und gasförmigen Ammoniak wird in sogenannten Brüdenwäschern durch Zugabe von Säure, in der Regel Schwefelsäure, „gewaschen“. Dabei reagiert das basische Ammoniak mit der Säure zu einer Ammoniumsulfatlösung. Der aus dem Brüdenwäscher austretende Wasserdampf sollte möglichst frei von Ammoniak sein, damit er- nach Kondensierung - ins Abwasser geleitet werden kann. Dies wird dadurch erreicht, dass durch die „Waschung“ eine Ammoniaksulfatlösung im niedrigen pH Bereich, von beispielsweise pH=3 erzielt wird. Je niedriger der pH-Wert umso reiner ist das Kondensat.This vapor from water vapor and gaseous ammonia is “washed” in so-called vapor scrubbers by adding acid, usually sulfuric acid. The basic ammonia reacts with the acid to form an ammonium sulphate solution. The steam leaving the vapor scrubber should be as free as possible of ammonia so that it can be discharged into the waste water after condensation. This is achieved by “washing” an ammonia sulphate solution in the low pH range, for example pH=3. The lower the pH value, the purer the condensate.
Die gewonnene Ammoniumsulfatlösung mit einem pH-Wert von ca. pH = 3 hat allerdings den Nachteil, dass bei einem pH-Wert unter 4 ein Transport sehr schwierig ist, weil sie als Gefahrgut eingestuft wird, sämtliche Dichtungsmaterialen auf Dauer Probleme bereiten, und vor allem das ASL beim Ausbringen stark kalkzehrend ist und die Pflanzen bei der Ausbringung verätzt werden können. Deshalb sollte der pH-Wert vor der Ausbringung angehoben werden.However, the ammonium sulphate solution obtained with a pH value of approx. pH = 3 has the disadvantage that with a pH value below 4, transport is very difficult because it is classified as dangerous goods, all sealing materials cause problems in the long term, and above all the ASL consumes a lot of lime when it is applied and the plants can be burned when it is applied. Therefore, the pH should be raised before application.
Aus der deutschen Patentanmeldung
Die europäische Patentanmeldung
Aufgabe der Erfindung ist es deshalb, eine Vorrichtung und ein Verfahren zur Verfügung zu stellen, mit dem das aus den Verdampfungsprozessen von organischen Rückständen gewonnene Ammoniumsulfatlösung bereits beim Waschen des Brüden neutralisiert wird.The object of the invention is therefore to provide a device and a method with which the ammonium sulphate solution obtained from the evaporation processes of organic residues is already neutralized during the washing of the vapor.
Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Figur beschriebenAn embodiment of the invention is described below with reference to the figure
Die
Den Verdampfern V1 bis Vn wird ammoniakhaltiger Rückstand, beispielsweise aus Biogasanlagen, Kläranlagen oder aus der Tierhaltung, beispielsweise als Gärrest über die Eingänge G1 bis Gn zugeführt. Soweit es sich um mehrstufige Verdampfungsanlagen handelt, wird dem Verdampfer Vn der Gärrest aus dem vorgeordneten Verdampfer Vn-1 zugeführt. Die Verdampfer V1 bis Vn können aber auch aus unterschiedlichen Quellen gespeist werden.Residue containing ammonia, for example from biogas plants, sewage treatment plants or from animal husbandry, for example as fermentation residue, is fed to the evaporators V1 to Vn via the inputs G1 to Gn. As far as multi-stage evaporation tion systems, the digestate from the upstream evaporator Vn-1 is fed to the evaporator Vn. However, the evaporators V1 to Vn can also be fed from different sources.
Der in den Verdampfern V1 bis Vn entstehende Brüden wird den Brüdenwäschern B0, B2 bis Bn über die Auslässe D1 bis Dn und die Einlässe E0, E2 bis En zugeführt. Dem Brüdenwäscher B1 wird der teilgereinigte Brüden über den Auslass W0 und den Einlass E1zugeführt.The vapor produced in the evaporators V1 to Vn is fed to the vapor scrubbers B0, B2 to Bn via the outlets D1 to Dn and the inlets E0, E2 to En. The partially cleaned vapor is fed to the vapor scrubber B1 via the outlet W0 and the inlet E1.
Die ASL-Auslässe A1 bis An der Brüdenwäscher B1 bis Bn werden über die Leitung ASL zum neutralisierenden Brüdenwäscher B0 zurückgeführt. Der gereinigte Brüden (Wasserdampf) aus den Brüdenwäschern B1 bis Bn verlässt diese über die Leitungen W1 bis Wn und kann nach Kondensierung ins Abwasser eingeleitet werden. Dazu kann der gereinigte Brüden beispielsweise auch zentral auf bekannte Weise mittels einer Vakuumpumpe abgesaugt werden. Die bei der Kondensierung freiwerdende Wärme kann - wie aus dem Stand der Technik hinreichend bekannt - zur Beheizung der Verdampfer V2 bis Vn genutzt werden.The ASL outlets A1 to An of the vapor scrubbers B1 to Bn are fed back to the neutralizing vapor scrubber B0 via the ASL line. The cleaned vapor (steam) from the vapor scrubbers B1 to Bn leaves them via the lines W1 to Wn and can be discharged into the waste water after condensation. For this purpose, the cleaned vapor can, for example, also be sucked off centrally in a known manner by means of a vacuum pump. As is sufficiently known from the prior art, the heat released during the condensation can be used to heat the evaporators V2 to Vn.
Die Brüden aus den Verdampfern V1 bis Vn weisen einen Ammoniakgehalt mit einem pH-Wert von 6 - 8 auf, also nahezu im neutralen Bereich. Würde der Brüden mit diesem pH-Wert gewaschen, wäre der entstehende „Wasserdampf“ noch stark Ammoniak beladen und könnte nicht ins Abwasser eingeleitet werden. Deshalb wird der Brüden in den Brüdenwäschern B1 bis Bn solange gewaschen, bis die über die Leitungen ASL austretende Ammoniumsulfatlösung einen pH-Wert von pH = ungefähr 3 aufweist. - Die pH-Werte können auf dem Fachmann bekannte Weise mit einer pH-Sonde gemessen werden. Auf eine Darstellung solcher Sonden wurde deshalb der Übersichtlichkeit halber verzichtet.The vapors from the evaporators V1 to Vn have an ammonia content with a pH of 6-8, ie almost in the neutral range. If the vapor were washed with this pH value, the resulting "water vapor" would still be heavily laden with ammonia and could not be discharged into the waste water. For this reason, the vapor is washed in the vapor scrubbers B1 to Bn until the ammonium sulfate solution exiting via the lines ASL has a pH value of about pH=3. - The pH values can be measured in a manner known to those skilled in the art using a pH probe. For the sake of clarity, such probes were not shown.
Bei einem pH-Wert von pH = 3 ist der gereinigte Dampf sauber genug, um nach Kondensierung ins Abwasser geleitet zu werden. Andrerseits ist die Ammoniumsulfatlösung noch relativ sauer, das heißt schwefelsäurehaltig, so dass die eingangs beschriebenen Nachteile entstehen würden.At a pH value of pH = 3, the cleaned vapor is clean enough to be discharged to waste water after condensation. On the other hand, the ammonium sulphate solution is still relatively acidic, ie contains sulfuric acid, so that the disadvantages described above would arise.
Deshalb wird die Ammoniumsulfatlösung aus den Brüdenwäschern B1 bis Bn zum Brüdenwäscher B0 zurückgeführt und dort auf einen pH-Wert von pH = annähernd 7 angehoben. Zur Anhebung des pH Wertes muss jedoch keine Lauge zugeführt werden, sondern es wird der Brüden aus dem Verdampfer V1 dazu genutzt.The ammonium sulphate solution from the vapor scrubbers B1 to Bn is therefore returned to the vapor scrubber B0 and raised there to a pH value of approximately pH=7. To increase the pH value, however, no lye has to be added, but the vapor from the evaporator V1 is used for this purpose.
Der Brüden aus dem Verdampfer V1 gelangt über den Auslass D1 in den neutralisierenden Brüdenwäscher B0. Da der Brüden einen pH-Wert von pH =6 bis pH = 8 aufweist, kann die im Brüdenwäscher B0 gesammelte Ammoniumsulfatlösung mit diesem Brüden auf einen pH-Wert von pH >= 6 angehoben werden. Dazu wird das ASL solange im neutralisierenden Brüdenwäscher B0 im Kreis gepumpt, bis es den gewünschten pH-Wert erreicht hat, dann wird es ausgeschleust, anschließend kommt wieder neue Ammoniumsulfatlösung über die Leitung ASL von den Brüdenwäschern B1 bis Bn in den neutralisierenden Brüdenwäscher B0 und der Vorgang wiederholt sich.The vapor from the evaporator V1 reaches the neutralizing vapor scrubber B0 via the outlet D1. Since the vapor has a pH value of pH = 6 to pH = 8, the ammonium sulphate solution collected in the vapor scrubber B0 can be raised to a pH value of pH >= 6 with this vapour. For this purpose, the ASL is pumped around in the neutralizing vapor scrubber B0 until it has reached the desired pH value, then it is discharged, and then new ammonium sulphate solution comes again via the ASL line from the vapor scrubbers B1 to Bn into the neutralizing vapor scrubber B0 and the process is repeated.
Die so neutralisierte Ammoniumsulfatlösung wird dann über die Leitung A0 ausgeschleust.The ammonium sulphate solution neutralized in this way is then discharged via line A0.
Claims (4)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018120720.4A DE102018120720B4 (en) | 2018-08-24 | 2018-08-24 | Apparatus and method for neutralizing an ammonium sulfate solution |
| CN201980050915.4A CN112543803A (en) | 2018-08-24 | 2019-07-18 | Equipment and method for neutralizing ammonium sulfate solution |
| ES19758329T ES2920328T3 (en) | 2018-08-24 | 2019-07-18 | Device and procedure for the neutralization of an ammonium sulfate solution |
| PCT/DE2019/100666 WO2020038518A1 (en) | 2018-08-24 | 2019-07-18 | Device and method for neutralizing an ammonium sulphate solution |
| EP19758329.7A EP3799599B1 (en) | 2018-08-24 | 2019-07-18 | Device and method for neutralizing an ammonium sulphate solution |
| PL19758329T PL3799599T3 (en) | 2018-08-24 | 2019-07-18 | Device and method for neutralizing an ammonium sulphate solution |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018120720.4A DE102018120720B4 (en) | 2018-08-24 | 2018-08-24 | Apparatus and method for neutralizing an ammonium sulfate solution |
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| Publication Number | Publication Date |
|---|---|
| DE102018120720A1 DE102018120720A1 (en) | 2020-02-27 |
| DE102018120720B4 true DE102018120720B4 (en) | 2022-06-23 |
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| DE102018120720.4A Expired - Fee Related DE102018120720B4 (en) | 2018-08-24 | 2018-08-24 | Apparatus and method for neutralizing an ammonium sulfate solution |
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| Country | Link |
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| EP (1) | EP3799599B1 (en) |
| CN (1) | CN112543803A (en) |
| DE (1) | DE102018120720B4 (en) |
| ES (1) | ES2920328T3 (en) |
| PL (1) | PL3799599T3 (en) |
| WO (1) | WO2020038518A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1318105A1 (en) | 2001-12-05 | 2003-06-11 | Mackowiak, Jerzy, Dr.-Ing. habil. | Process and device for the removal of ammonia from wastewater and the recovery of valuable material |
| DE102009036874A1 (en) | 2009-08-10 | 2011-03-31 | Verbio Vereinigte Bioenergie Ag | Process for the energetically optimized recovery of ammonium salts |
| DE102010017334A1 (en) | 2010-06-11 | 2011-12-15 | Mkr Metzger Gmbh Recyclingsysteme | Treating organic residues from anaerobic processes, preferably fluid residues, comprises concentrating the organic residues by evaporation, and producing an ammonia-containing condensate in addition to the concentrated organic residues |
| EP2808304A1 (en) | 2013-05-27 | 2014-12-03 | MKR Metzger GmbH RECYCLINGSYSTEME | Method and system for processing aqueous, organic residues |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3941431C2 (en) * | 1989-12-15 | 1993-10-21 | Meyer Fa Rud Otto | Process and plant for landfill gas and leachate disposal |
| US7323100B2 (en) * | 2004-07-16 | 2008-01-29 | Conocophillips Company | Combination of amorphous materials for hydrocracking catalysts |
| US7258848B1 (en) * | 2006-07-31 | 2007-08-21 | E. I. Du Pont De Nemours And Company | Process for scrubbing ammonia from acid gases comprising ammonia and hydrogen sulfide |
| EP1953137A1 (en) * | 2007-02-02 | 2008-08-06 | Urea Casale S.A. | Process and plant for the production of an aqueous solution comprising urea |
| CN103012273A (en) * | 2012-11-26 | 2013-04-03 | 中国化学赛鼎宁波工程有限公司 | Neutralized crystallization system and method of preparing caprolactam through caprolactam rearrangement solution |
| CN103894048B (en) * | 2014-04-18 | 2015-12-09 | 中石化南京工程有限公司 | A kind of method processing low concentration ammonia-containing exhaust |
| TW201546026A (en) * | 2014-04-25 | 2015-12-16 | Invista Tech Sarl | Catalyst preparation and hydrogenation process |
| JP6386338B2 (en) * | 2014-10-24 | 2018-09-05 | オルガノ株式会社 | Ammonia-containing wastewater treatment apparatus and treatment method |
-
2018
- 2018-08-24 DE DE102018120720.4A patent/DE102018120720B4/en not_active Expired - Fee Related
-
2019
- 2019-07-18 CN CN201980050915.4A patent/CN112543803A/en active Pending
- 2019-07-18 PL PL19758329T patent/PL3799599T3/en unknown
- 2019-07-18 EP EP19758329.7A patent/EP3799599B1/en active Active
- 2019-07-18 WO PCT/DE2019/100666 patent/WO2020038518A1/en not_active Ceased
- 2019-07-18 ES ES19758329T patent/ES2920328T3/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1318105A1 (en) | 2001-12-05 | 2003-06-11 | Mackowiak, Jerzy, Dr.-Ing. habil. | Process and device for the removal of ammonia from wastewater and the recovery of valuable material |
| DE102009036874A1 (en) | 2009-08-10 | 2011-03-31 | Verbio Vereinigte Bioenergie Ag | Process for the energetically optimized recovery of ammonium salts |
| DE102010017334A1 (en) | 2010-06-11 | 2011-12-15 | Mkr Metzger Gmbh Recyclingsysteme | Treating organic residues from anaerobic processes, preferably fluid residues, comprises concentrating the organic residues by evaporation, and producing an ammonia-containing condensate in addition to the concentrated organic residues |
| EP2808304A1 (en) | 2013-05-27 | 2014-12-03 | MKR Metzger GmbH RECYCLINGSYSTEME | Method and system for processing aqueous, organic residues |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2920328T3 (en) | 2022-08-02 |
| DE102018120720A1 (en) | 2020-02-27 |
| EP3799599B1 (en) | 2022-04-06 |
| CN112543803A (en) | 2021-03-23 |
| WO2020038518A1 (en) | 2020-02-27 |
| PL3799599T3 (en) | 2022-07-04 |
| EP3799599A1 (en) | 2021-04-07 |
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